In fact, polypropylene is one of the easiest and most convenient thermoplastics for welding, which is used for various purposes. Polypropylene has very good chemical resistance. The weight of propylene is very low and its tensile strength is extremely high. In terms of dimensions, it is also the most stable type of polyolefin. Polypropylene has many applications, including that it is used for electroplating equipment, various tanks and ducts, steam hoods, scrubbers and orthopedic devices.